Shuttle-changing loom



Dec. M 1923. 1,476,843r

E. H. RYON SHUTTLE CHANGING LO OM Filed Oct. J 1920 7 Sheets-Sheet )l Hee., M i923., L47647 H. mfom SHUTTLE CHANGING LO OM Filed Oct. l 1920 '7' Sheets-Sheet 2 Dec., 1l 1923. 1,476,847

E. H. RYON SHUTTLE CHANGING LOOM Filed Oct J 1920 7 Sheets-Sheet 3 Dec., 11 1923. 1,476,847

E. H. RYON SHUTTLE CHANGING LOOM Filed Oct. J 1920 7 Sheets-Sheet 4 ff; S s Se O OO Lw NGl om mm; Mt. HCON ELd Te mu. HF

Dec. l1 1923.,

E. H. RYON SHUTTLE CHANGING LOOM Dec. 11 1923.

Filed Oct. J 1920 7 Sheets-Sheet 6 Dec. 1i 1923.

E. H. RYON SHUTTLE CHANGING Loom Filed Oct. l 1920 7 Sheets-Sheet 7 69pm @w+ v www@ Patented Dec. l 1;.

Erre n. nYoN, or wurm, nssacnusms, lmarcatore.' v'ro' anemona xNowLns Loon wom, or woncrsrnn, nssxcnusar'rs, acoarou'rIon-or,nnssa- ,Y

CHUSETTB.

Appunti@ nea october 1, me. ,anni nq. 414,o4e

Toy'aZZ whom t ma dunklem.' Be it known that EPPA H. RYoN, a citidrgp zen of the United States,v residing at\ 1g.

Waltham, in the county of Middlesex and State of Massachusetts, have invented a new and useful Shuttle-Changing Loom, of which the following is a specification.

This invention relates to a loom of a type in which a substantialy exhausted shuttle is automatically .replace without interference with the operation of the loom.

` It is the object of my invention to provide a simplified magazine and transfer mech anism for a loom of this type, in which all replenishing movements are made at conservative speeds and with great certainty as" to results. l

With this general object in view, an important feature of my invention concerns the provisionof shuttle magazine and holder mechanism designed to advance a fresh shuttle to transfer position immediately after shuttle transfer and to hold the fresh shuttle in such position until'the next. transfer is called.

A second important feature relates to the provision of an auxiliary shuttle box on the ay, advanced to shuttle receiving osition by each forward movement of the ay, and effective at the time of transfer to remove the fresh shuttle from its holder by a simple upward movement of the auxiliary shuttle box to running or operativeposition.

An important detail of the auxiliary shuttle box is Athe movable front side, the box being normally opened at'the front and being closed only when raised to running position.

I have also provided improved andnovel devices for receiving the exhausted shuttle and for removing the same to a convenient rece tacle.

y invention further relates to arrangements and combinations of parts which will y be hereinafterl described and more. particusaurions-CHANGING antun?.l

by a fresh shuttle,`

F-ig. 4 'is lan enlarged .frontview of the boxes and lay'end; 1

5 is a perspective view of thefdrop boxes, with'certain parts separated to show the :details of construction; -K

Figs. 6, 7, 8, 9,- and 10 are diagrammatic views illustrating different steps in the transfer of a shuttle; v y v i. Fig. .11 is an enlarged side elevation of certaln operating parts;

holder;

Fig. 13 is a plan view of the Stora compartment for exhausted shuttles; ande Fig. 14 isa detail side elevation 'Bf a modification. Y

Referring to the drawings, I have shown a loom frame 10 of the usual ,type in which a lay 11 is mounted for reciprocation by the usual crankshaft 12 and connecting arms 13. A shuttle magazine 14 is mounted at the front of the loom frame 10 and'is 'adapted to contain a plurality of fresh shuttles, as shown in- F1 2. A shuttle holder is vmounted to slide beneath the magazine 14.

As shown in Fi 12, the holder comprises slides 15 and en guides or retaining members 16, the latter bein preferably formed of thin sheet steel an enclosing the ends of the shuttle.

The slides 15 are mounted in guide-ways 17 Figs. 1 and 2) and are moved in the gui e-ways by a forked lever 18 vivoted at 19 to a bracket 20 secured to the oom side. A yielding latch 21 (Fig. 1) engages a pin 22 on the lever 18 and prevents accidental displacement of the shuttle holder from its transfer position.

The lower portion of the lever is formed in two parts for purposes of adjustment, said parts having a bolt and slot connection 23. A stud 24 is adjustably secured in a slot 25 (Fig. 1) in the lower end of the lever 18 and extends through an L-shaped slot 26 in the .front end of a link 27 connected at its rear end to the lower end of the lever 28. The lever 28 is pivoted at 29 to a bracket on the loom side 10 and is provided -with a roll 30 positioned for engagement by a cam 31. The cam 31 is mounted on the usual bottom shaft 32 and makes one revolution for each two beats of the lay. 5

When the front end of the link 27Ys in lowered position, as shown in Fig. 1, the`x link reciprocates idly and the lever 18 re- Fig. 12 is a plan view kof the vshuttle loo -shown in Fig. 1.

scribed, the lever 18 is oscillated, and the)` shuttle holder is moved orwardto receive a fresh shuttle, after which it is immediately returned to the normal latched position Special movable shuttle boxes are provided on the magazine end of the lay, these boxes preferably comprising an upper box 33 (Fig. 5) of usual type, and a lower or auxiliary box 34 of special construction. The boxes are provided with vertical guides 35 and 36 (Fig. 5) and .slide vertically in guide-ways 37 and 38 (Fig. 4). The boxes are open on their rear sides throughout the greater portion of their length, the rear open sides of the boxes being closed by a plate 38 when the boxes are in lowered position. The rear side of the upper box is open when in raised position to permit ejection of the exhausted shuttle. The plate 38* is slotted for the usual spindle picker (not shown). rIfhe boxes are supported by a rod 39 'extending downward through a bearing 40 (Fig. 2) `in a casting 41 fixed to the end of the lay shaft 42. An arm 43 is fixed to the lower end of the rod 39 and is linked to a stud 44 by a give-way connection 45. The stud 44 is fixed inthe frontend of the lever 46 which swings on a fixed pivot 47. y

A cam lever 48 (Fig. 1) is also pivoted on the stud 47, and a cam roll 49 thereon 1 s engaged by the cam 31 .previously described, by which the lever 48 is rocked at every a1- ternate beat of ,the lay. Springs 50 and 51 hold the rolls 30 and 49 against the cam. 31 and give the levers 28 and 48 their yielding reverse movements.

A latch 52 (Fig. 3) is pivoted at 53 to a projection on the side of the lever 48, the outer end of the latch being turned sub-v stantially at right angles and extending through an opening 54 in the lever 48. A spring 55 normally holds the latch in the position shown in ig. 3, in which position an extension 56 of the latch engages the lever 48 and acts as a'stop. A portion 57 of the lever 48 extends under and around the lever 46 (Fig. 2) and acts as a guide therefor.

A connection 58 (Fig. 3) extends from the latch 52 to Suitable weft detecting mecha-v nism by which the latch 52 is moved through the opening 54 upon substantial weft exhaustion. The weft detecting mechanism may be of any well-known and suitable construction and as the same forms no part of my present invention, the det-ails are not shown in the drawings.

The latch 52, when moved by the connection 58, projects under the lever 46 and raises the lever upon the next upward movement of the cam lever 48. Such movement of the lever 46 raises the drop boxes 33 and 34 so that the auxiliary box 34 occupies the usual position of the regular shuttle box 33. The box 34 is normally open at its front side, but is provided with a plate 60 (Fi 4) havin arms 61 (Fi 5) fixed to the en s of asha t 62 supported in bearing arms 63 which in turn are fixed on a second shaft 64 which is rotatable in bearings 65 fixed to the bottom of the box 34.

An arm 66 is fixed to the shaft 64 and enga es a portion of the lay end as the rod 39 and drop boxes are moved upward. Such engagement moves the shaft 64 and bearing arms 63 to the successive ositions shown in Figs. 6, 7 and 8, raising t e box plate 60 to close the front of the auxilia box34.

A coil spring 67 on the sha t 62 yieldingly holds the plate 60 against the front of the box, and an arm 68 on the shaft 62 engages a surface 69 (Fig. 5 on the drop box frame, as the boxes reach t eir upper position, and holds the pate 60 positively in operative position w le the fresh shuttle is beinv picked from the auxiliary box.

In Fig. 6 the latch 52 has been moved under the lever 46 and upward movement of the rod 39 and parts supported thereby has begun. This movement occurs as the lay approaches its front center. When the extreme front center is reached, the fresh shuttle S is within the auxiliary box 34, and the plate 60 is partially raised, as shown in Fig. 7. Further upward movement of the box 34 removes the shuttle from the shuttle holder and raises the plate 60 to its full operative position, as shown in Fig. 8. While in this position, the shuttle S is picked from the box in the usual manner, and the empty shuttle holder is moved forward (Fig. 9) as hereinafter explained. The regular shuttle box 33 then returns to its operative position (Fig. 10) while the new shuttle S is at the opposite side of the loom.

The operation of the shuttle holder is controlled by the lever 46 which has an u ward projection 70 supporting a roll 71. en the lever 46 is raisedv by the latch 52, the roll 71 engages the under side of the slotted link 27, and raises the link as shown in Fi 8, so that the stud 24 enters the short vertical portion of the slot 26. As the link 27 is thereafter moved by the lever 28 from the position shown in Fig. 8 to that shown in Fig. 9, the lever 18 is actuated to move the shuttle holder forward so that it will receive a fresh shuttle Sz from 'the magazine 14. The parts then return to the position shown in Fig. 10, with the shuttle holder yieldingly latched in normal position.

As the drop boxes are raised to the position shown in Fig. 8, the regular shut-tle box is projected above the fixed back of the box, and the shuttle S is pushed rearward by the box binder over a guide plate 72 on the back of the lay and is deposited in a transfer receptacle 73. The receptacle 73 is supported at the end of a lever 74 pivoted on a bracket 75 fixed to the loom side 10. The lever 74 (Fig. 1) is connected by a link 76 to an actuating lever 77 pivoted at 78 on the bracket 20, previously described. A cam roll 79 on the lever rests on a cam 80 mounted on a short shaft 81, rotatable in a fixed bearing in the loom side 10.

A ratchet wheel 82 (Fig. 11) is mounted to rotate with the cam 80, the ratchet wheel being intermittent] rotated by a pawl 83 mounted on one en of a lever 84, the o posite end of which is connected b a lin 85 to the lever 28 previously described. Several teeth are omitted at one portion of the ratchet wheel 82 and this portion is in the path of the'. pawl 83 when the cam is in its lowest position, as shown in Fig. 11. The cam 80 therefore remains normally at rest with the pawl 83 sliding forward and backward over the smooth portion of the ratchet wheel. A

A second feed pawl 86 is mounted on an arm 87 and is connected by a link 88 to the lever 18 (Fig. 1) which positions the shuttle holder. The second pawl 8,6 is thus actuated only as the shuttle. holder is moved after shuttle transfer. Such movement of the pawl 86 advances the ratchet wheel 82 to a position in which the regular pawl 83 can engage the teeth of the ratchet wheel and. intermittently advance the wheel and cam until ka full revolution has been completed.

Such movement of the cam raises the transfer receptacle 73 from the position shown in full lines in Fig. 1 to the dotted line position in said figure. An arm 89 (Fig. 1) is secured to the end of the receptacle 73 and carries a roll 90 movable in a ported on a bracket 102 and movable by av slotted link or support 103 to which a cam roll 104 is directly secured. The roll 104 engages a cam 105 rotatable with a ratchet wheel 106 as previously described. The ratchet wheel is moved b a pawl 107 on a lever 108 connected by a l1nk 109 to the lever 28 shown in Fig. 1. A second feed pawl 110 is mounted on a lever 111 which in turn is connectedby a link 112 to the lever 18. (Fig. 1) as in theform previously described. A friction lever -113 is mountedl on a fixed pivot 114 and yieldingly engages 'an inner feed pawl's. T e receptacle 100 is provided with a short arm 115 supporting a roll 116 whlch follows a cam slot 117 as the receptacle is raised. The operation of this modified construction is substantially the same as I have previously described.

Having described the details of construetion of myimprove'd loom, the advantages secured therefrom will be apparent. The mechanism is entirely devoid ofvabrupt or sudden movements, such as are found in certain prior shuttle changingy mechanisms. The fresh shuttle is held in' position for immediate transfer during the normal operation ofthe loom.

When weft exhaustion is indicated, the

transfer is accomplished by a simple upward movement of the drop boxes as the lay is passing over the front center. By such movement the fresh shuttle is lifted from the shuttle holder and is .carried upward to running position and into the path of the usual picker. During the upward movement of 'the auxiliary shuttle box, the box platev60 is moved into position to close the front of the box and act as a binder when the shuttle is picked therefrom. The same upwardvmovement of the drop boxes raises the regular shuttle box above the back of the lay and permits the shuttle binder to push the exhausted shuttle out of the rear of the box and into the receptacle 73 byI which it is thereafter raised and deposited in the storage compartment 92.

As soon as the fresh shuttle is removed from the shuttle holder, the holder is moved forward under the magazine and receives another fresh shuttle with which it returns to norma-l position. After lthe shuttle is picked from the auxiliary box 34, the boxes are returned to normal position and the shuttle upon its return Hight enters the regular shuttle box 33.

As the auxiliary shuttle box 34 is brought to rest in its raised position, there is a tendeney for the fresh shuttle to be lifted from its seat. To avoid this, 1 provide a spring arm 118 (Fig. 4) pivotally connected at one end to the frame of the movable boxes, and having its free end extending transversely over the shuttle box 34. A spring 119 holds the arm normally against the lower side of the bottom plate of the vupper box 33. An arm 120 is fixed to the lay end and is engai-ged by the spring arm 118 as the box 34 rises, such enfgagement pressing the arm 118 downward against the rear end of the shuttle S and firmly seating it in the box. This is essential for satisfactory operation of the picker.

Having thus described my invention it will be evident that changes and modifications can be made therein by those skilled Miti , fresh shuttle from the shuttle holder while\` the latter is in its normal rearward position and to place said'shu'ttle in operative position'on :the lay solely by such vertical movement.

2. A shuttle `changing loom having, in

A combination, a lay, regular and auxiliary shuttle boxes mounted for vertical movement on said lay, a shuttle holder by which a fresh shuttle is supported to enter the auxiliary shuttle box ateach forward movement of the lay, means to raise said auxiliary box Ito running position upon indication of weftexhaustion, and means -becoming' operative as the box is raised to retain the fresh shuttle therein. i

3. A shuttle ch ing loom having, in combination, a shutt e magazine, a shuttle holder, a lay, a shuttle box movably mpunted thereon, an auxiliary shuttle box having an open front side, means to'move said auxiliary box to operative position, thereby removing a fresh shuttle from the .shuttle holder therein, and means mounted on said lay and permanently associated y.with said box, effective to close said open side as the box is moved to operative position and thereby hold said shuttle in said auxiliary box.

4. In a loom, in combination, a lay, an

auxiliary shuttle box movably mounted thereon and having an open front side, means to move said box vertically, and closing means mounted on said'lay and permanently associated with said box, effective to close 'the open front side of the auxiliary box as the box is moved vertically to operative position.

5. A shuttle changing loom having, in combination, a shuttle magazine, a shuttle holder, a lay, a shuttle box movably mounted thereon, an auxiliary shuttle box adjacent thereto and having a movable front side, means to move said auxiliary box into operative osit-ion, simultaneously removing a fresh sliuttle from the shuttle holder, and means to raise said movable side to close the front of said box and retain said shuttle as said box is moved to operative position.

6. In a loom, in combination, a shuttle holder, a lay, an auxiliary shuttle box mounted thereon and havin'g a normally open front side, said box being advanced to enclose said fresh shuttle in the holder at each V'beat of the lay, and means to raise said auxiliary box to remove the said shuttle from said holder upon indication of weft exhaustion.

7. In a loom, in combination, a shuttle holder, a lay, an auxiliary shuttle box mounted thereon and having a normally open front side, said box being advanced to enclose the fresh shuttle in the holder at each beat of the lay, means to raise said auxiliar box to remove said shuttle from said ho der upon indication of transfer, and means to simultaneously close the open side of said auxiliary box to retain said shuttle therein.

8. In a loom, in combination, a shuttle holder, a lay, an auxiliary shuttle box mounted thereon and having a normally open front side, said box being advanced to enclose the fresh shuttle in the holder at each beat of the lay, means to raise said auxiliary box to remove said shuttle from said holder, and means to simultaneously close the open Side of said auxiliary box by a cam action between a part movable with the auxiliary box and a part of the lay.

9. A shuttle changing loom comprising a shuttle magazine, a shuttle holder, means to transfer a shuttle from the holder to the running position on the lay, and actuating devices by which a fresh shuttleis iminediately inserted in said holder from said magazine after the transfer of the shuttle contained in said holder and by which said holder is caused to advance said fresh shuttle from receiving to transfer position immediately after the transfer of a shuttle from said holder to running position on the lay.

10. In a shuttle changing loom, in com-- bination., a shuttle removal receptacle, a shuttle storage compartment, means to give said receptacle a movement toward said compartment, and means to give said receptacle an additional tilting movement as it approaches said compartment to deposit the shuttle therein.

11. In a shuttle changing loom, in combination, a shuttle box, means to eject a substantially exhausted shuttle from said box, a removal receptacle to receive said exhausted shuttle, a storage compartment, and means to raise said removal receptacle and to cause said shuttle to be deposited in said storage compartment, said means including a receptacle removing cam and driving mechanism for said cam operative only after a shuttle change.

12. In a shuttle changing loom, in combination, a shuttle box, means to eject a substantially exhausted Vshuttle from said and means to raise said removal receptacle lil ramer? box, a removal receptacle to receive said exhausted shuttle, a storage compartment,

and to cause said shuttle to be deposited in said storage compartment, said mechanism including a cam, a mutilated ratchet wheel, a regularl actuated drive pawl for said ratchet w eel, and a second drive pawl actuated only on shuttle transfer.

13. ln a loom, a lay, re ular and auxiliary shuttle boxes mountedV or vertical movement therein, a shuttle holder, and means to yieldingly position said shuttle holder to relatively enter said auxiliary box at each forward movement of the lay.

ld. lin a shuttle changing loom, in combination, a lay, a shuttle box, means to eject a substantially exhausted shuttle rearwardly .trom said box, a storage compartment for ejected shuttles positioned substantially higher than said lay and readily accessible from the front of the lay, and transfer means to receive said shuttle and to move said shuttle upwardly and forwardly to said storage compartment.

15. In a shuttle changing loom, in combination, a lay, a shuttle box, means toeject a substantially exhausted shuttle rearwardly from said box, a storage compartment for ejected shuttles positioned substantially higher than said lay and readily laccessible from the front of the la and removal means to receive said ej ecte shuttle, to raise said shuttle higher than said storage compartment and at the rear thereof, and to cause forward delivery of said raised shuttle to said storage compartment. i

16. ln a shuttle changing loom, in combination, a lay, a regular shuttle box open at the rear and having a binder at the front thereof, an auxiliary shuttle box movable with and located below said regular shuttle box and open at both front and rear, a relatively wide box plate located on said lay and serving? as a continuous back for 4both of said shuttle boxes, and means to give said boxes a vertical movement relative to said back box plate.

17. A shuttle changing loom having, in combination, a shuttle magazine, a shuttle holder adapted to receive a spare shuttle from said magazine, a lay, a regular shuttle box movably mounted thereon, an auxiliary shuttle box adjacent thereto and movable therewith, means to move said shuttle holder rearward to normal position from its receiving position adjacent said magazine after a shuttle change. and immediately after the deposit of a spare shuttle therein, and weft controlled means to move said shuttle boxes vertically thereby ejecting a substan-v tially exhausted shuttle from the regular shuttle box and removing the spare shuttle from said shuttle holder to running position on said lay by such vertical movement of the auxiliary shuttle box.

In testimony whereof ll have hereunto aixed my signature.

EPPA H. RYON. 

